Racing Brainteaser A car travels around a one kilometre track with an average speed of 30kph. What speed will the car have to average in the second lap to have an average speed of 60kph over both laps?

Einstein’s Riddle Have a go at solving the brainteaser below. It isn’t a trick question, so you can solve it using pure logic. There are 5 houses in 5 different colors. In each house lives a person with a different nationality. These 5 owners drink a certain beverage, smoke a certain brand of cigar and […]